keep the bow directly in toward the beach，and tow the sea anchor off the stern
ride in on the back of a large breaker
keep the bow into the seas with the sea anchor out over the bow，and row to meet the breaking waves
head directly into the beach by staying between the crests of the waves
第1题：
A.mustn’t you
B.haven’t you
C.didn’t you
D.hadn’t you
第2题：
A.needn't , may
B.mustn't , may
C.can't , can
D.needn't , must
第3题：
--I thought you wouldn't mind.
--Well, as a matter of fact, I don' t, but you_____________me first.
A． should ask
B． should have asked
C． must ask
D． must have asked
第4题：
Must I stay at the office this afternoon? ---No, you ______.
A、don’t
B、needn’t
C、don’t need
D、can’t
第5题：
A:Hey，Jane，where are you going this weekend?
B:Hi，Bob，l'm going to the beach with some_ f_______ (36) Do you want to come，too?
A: Yeah，that_ s_______ (37) like fun．_W_______ (38) beach are you going to?
B:We were thinking about _d _______ (39) to the north to Grover's Beach;1 like to w
(40) the sea birds there．
A:That sounds great! What time do you__p_______ (41) to leave?
B:I think at about four o-clock on Friday．
A:Do you have_ s _______ (42) for me in one of the cars?
B:Sure，we'll fit you into a car．
A:Great! _W_______ (43) should we meet?
B:Meet me on Friday in_ f _______ (44) of my house．
A:Ok，l'll see you_ t _______ (45)． Bye．
36．_______
第6题：
A、No, you needn’t
B、No, you mustn’t
C、OK
D、no, you won’t
第7题：
A. mustn’ t…must
B. needn’ t…must
C. can’ t…can
D. can’ t…must
第8题：
—Must I be in hospital for a week， Doctor?
—No， you_________. You can go back home tomorrow.
A. mustn’t B. needn’t C. must
第9题：
A、should have done
B、must have done
C、must do
D、have to do
第10题：
A
Why do plants grow in some places and not in others? Why does some land have so much growing on it，while other land has almost no plants growing on it at all?
To grow plants need several things． One is warmth． In very cold places almost nothing grows． Plants also need water． In very dry parts of the earth only a few unusual plants can grow． That's why dry deserts everywhere are almost not covered by trees or grass．
Plants must also have a place in which to f，ut down their roots and grow． They find it diffi-culr to grow on hard land． The town is built on hard land． The plants here have only the soil found between the cracks of the stones Io grow in．
Another thing plants must have before they can grow is food．
Whar will happen if we try to make things grow on the sandy beach? A few plants，such as beach grass，will grow in sand，L ut most plants won-t． Even if the weather is warm enough．and we water the plants each day． Many of them will die because the sand on this beach has al-most no food for plants．
( )21． According to the passage，plants need _________ things to grow well．
A． two
B． three
C． four
D． five