It was _____ computer games that cost the boy a lot of time that he ought to have spent on his lessons.
| A．to have played | B．playing |
| C．played | D．having played |
She is doing her homework.I'll do_______.
| A．such | B．so | C．the same | D．the same as |
Mary learned Chinese for about two years, _______is, from 1993 to 1995.
| A．this | B．that | C．it | D．he |
I hate ______ when people talk with their mouths full.
| A．it | B．that | C．these | D．them |
Few pleasures can equal _____ of a cool drink on a hot day.
| A．some | B．any | C．that | D．those |
I found _______impossible for _______to work out the maths problem.
| A．it; him | B．it; he | C．that; him | D．that; he |