He bought glee him muchknowledge and ______ could help him to kill the time．

Our class _______ 55 students at that time

Do you think it’s a good idea to make friends with your students?— ________, I do I think it’s a great idea[ ]

The policeman are looking for people________the accident which happened last night. [ ]

It was only after she had read the papers _______ Mary realized the homework before her was extremely difficult to complete.