C. 括号内所给动词的正确形式填空。
【小题1】What is he busy doing? Doing the experiment ________(complete) the science project.
【小题2】We’d better ________(choose) him as the best one at the meeting.
【小题3】The government encouraged us _____________(plant) more trees.
【小题4】In fact, the tigers in India ___________(disappear) much faster than pandas now.
【小题5】A talk on study ____________(give ) at the end of every term at school.