The work is too difficult for Mr. Zhu to finish in a week. He needs ______ days.
I feel it useful _________English. A.to learn B.learn C.learning
I prefer ________his new idea. A.try out B.to try out C.trying out
He wanted _________ an inventor . A.to be B.being C.is
___________ is better than to receive. A.To give B.Give C.Have given
We have helped the animals in danger _________ it has still a lot of things to do . A.so B.and C.but