The river is very wide.None of us ( ) swim across it .A.can

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The river is very wide.None of us ( ) swim across it .A.can B.could C.be able to D.able to
When the boat sank,he ( )swim to the bank.
A.can B.could C.was able to D.is able to

The river is very wide.None of us ( A) swim across it .A.can B.could C.be able to D.able to
When the boat sank,he ( C )swim to the bank.
A.can B.could C.was able to D.is able to
can 和be able to 都有能、会的意思,但是be able to 有更多的时态变化形式,can 只有一般式和过去式形式,第一个题中要把C答案入选的话,应该是is able to ,第二个题中时态是过去式形式,它表示主语有能力做某事,我个人认为C 比B更合适些!

The river is very wide.None of us ( ) swim across it .A.can The river is about 20 meters wide.Can you swim ______ it? the river is about two hunderd f____ wide ,we all can swim a the river is so wide that they couldn't swim across (状语从句） This little boy_________(swim)across the wide river next yea It is very dangerous to swim in the river.What can stop them this question is very hard.None of us can work it out.(保持原意） It can swim in the river.It is f( ) It can swim in the river.It is f 单项填空 The river is too wide for the swimmers______.A.to swim the river is dangerous.you ___ swim in it .A.can't B.mustn't It is easy for him to swim ___(through,across) the river.