用括号内所给动词的正确形式填空(共6小题；每小题1分。满分6分)
小题1:We (go) fishing if it is fine next Sunday.
小题2:Work harder, and you (get) better grades in your lessons.
小题3:Too much homework _________ (lead) to students’ poor health.
小题4:______ (catch) the early bus, he got up early this morning.
小题5:Not only they but Jim _________ (watch) the birds in Yancheng Nature Reserve now.
小题6:He was busy________(write) a report on animals in danger between 7 and 9 o’clock yesterday evening.