________(fail)severaltimes,theyneedsomeencouragement.
To succeed in a scientific research project ________.
Hardly had he finished his speech ________ the audience started cheering.
Thisdiploma(毕业文凭)________thatyouhavecompletedhighschool.
He fell asleep immediately last night; he must ________ (be) very tired.
Hardlyhadhefinishedhisspeech________theaudiencestartedcheering.