. When the teacher came in, the student pretended ________ his lessons.
| A．to do | B．to have done | C．to be doing | D．to be done |
Unfortunately, the couple _______ after years of quarrels .
| A．broke down | B．broke up | C．broke out | D．broke off |
This book _____ ten units, ______ three mainly revision.
| A．contains; including | B．includes; containing |
| C．contains; containing | D．includes; including |
The book is _______ that one.
| A．as three times long as | B．three times the length of |
| C．three time as long as | D．three times as longer as |
Last winter, many places of southern China were struck by heavy snowstorms, __________more than 120 people were killed.
| A．from which | B．for which | C．at which | D．in which |
I’d appreciate __________ if you could lend me a hand with my homework.
| A．it | B．so | C．that | D．you |