These young trees must .

These young trees must        .

#44857

look after well

be well looked after

take good care of

be taken good care

推荐题目

We ____ not to play computer games.

#44747

are told

have told

told

tell

 The girl was often heard ______ happily in her room.

#44796

sing

to sing

singing

sings

— At present, one of the best ways to study is working in groups.—More chances _______ to students to learn from each other.

#44448

offer

is offered

are offered

have offered

Computers ________widely in our daily life.

#44976

use

used

were used

are used

He was often seen _________ with charity work last year.

#44620

to help

helped

helping

help

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