— Allanlookstiredout. — Sure.He_______inthegymfortwohours. [ ]

The number of foreign students attending Chinese universities ______ rising step by step since 1999.

MrSmith is trying to hire a new secretary，who can both type and drive

She was so amused with the magician’s tricks that she _______ a smile.

So difficult _______it to work out the problem that I decided to ask Tom for some advice.