一You have made great progress in your studies of English，haven’t you?
一Yes，but much _______ ． ‘
| A．remains to do | B．is remained to do |
| C．remains to be done | D．is remained to be done |
Our bad living habits will destroy the earth. Only by changingwe live can we save the earth．
| A．that | B．what | C．how | D．where |
His suggestion made me angry, but.
| A．making others happy | B．to make others happy |
| C．with others happy | D．others happy |
With her eyesthe work attentively, she didn't know what was happening outside.
| A．fixed on | B．focused | C．fixing on | D．focusing |
—What happened to the young trees we planted?
—The treeswell, but I didn't water them.
| A．might grow | B．needn't have grown |
| C．would grow | D．would have grown |
—Has your son come back from abroad for the winter vacation?
—Yes. But he stayed at home for only a week. Now heback to college.
| A．went | B．has gone | C．was going | D．will go |