It is ______ for children to learn to take care of themselves if they are going to camp for two weeks by themselves. [ ]

–She looks very happy. She________have passed the exam.–I guess so. It’s not difficult after all.

______ ! Where is my pencil—– ________ , I don’t know.

I stood there wanting to ask more questions but foundthat was not the time.

His pale face suggested that he ______ ill andthe teacher suggested that he _______ the doctor.