_______ trees have been planted near here, so the air is very fresh.

May I play computer games now——No，_____ you have finished your homework.

Chris, could you help me __________my dog while I’m on holiday—Sure. I’ll take good care of it.

asses, _______ he could see nothing,was taken away by a naughty boy.

下列各句中，没有语病的一句是（ ）