On Sundays there were a lot of children playing in the park, and _______ parents were seated together joking.
| A．their | B．whose |
| C．which | D．that |
—____ you got to know my telephone number?
—Through a friend of yours.
| A．What was it that | B．How did | C．Where was it | D．How was it that |
It’s amazing that Mike should get such good marks while he does only ________ the others.
| A．as much as half | B．as many as half | C．half as much as | D．half as many as |
It was not until Mum agreed to buy him a computer, _______ was his favorite, _______ the boy promised to study hard.
| A．that; that | B．which; that | C．that; which | D．which; which |
_______ good use of learning resources such as the website and library, and you will make great progress.
| A．To make | B．Making | C．Make | D．Having made |
________, I'm glad you made that mistake, for it will serve as a warning to you.
| A．In case | B．In a way | C．In return | D．In relief |