Look at that girl! Is it Susan? –No, it _______ be hers. She has gone back to her hometown.

Why does Tommy look excited ? — Because he can’t wait ______ part in the basketball match.

Ordinary woman though she is, she had won the award because she tries every means to make people _________ of the importance of the environment conservation.

It’s time ______ have dinner. [ ]

The harder you work at your lessons, the greater progress you ________.