If you keep on, you’ll succeed ________.[ ]

______ be MrJohnson who is in the office— No, it _______ be himI saw him off at the airporthalf an hour ago

Let’s go to the movie tonight, Jim!—_____ we are not allowed to do it on school days.

Wherever he goes ,the young man is able to readily____ himself to new environment.

aged by my science teacher, I set about mystudies on developing my product, _____I hope I will succeed in applying for apatent.