I won’t have time to go shopping with you this afternoon. — But you ________ me yesterday.

Shall we go shopping?—Good idea! But the supermarket ________ now.

He _______ be a history teacher.

Listen! Is Kitty in the next room? —No, it ______ be Kitty. She has gone to Beijing.

____ the help of the teacher, Tom has made rapid progress ____ his studies. [ ]