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

I find _______ difficult to finish the work on time. We only have three hours left.

What do you usually do ______ Sundays? — We enjoy ourselves at the guitar club. [ ]

In my class, 85% of the students like to go shopping on weekends. 85% means.

Jack runs ______of all in the sports meeting. He is good at running.