You buy a gift, but you can if you want to.
| A．must | B．mustn't | C．have to | D．don't have to |
It’s quite obvious that the aging population in China will cause _____ heavy pressure
on _____whole society in the future.
| A．a; / | B．/; / | C．a; the | D．the; a |
35.It is said that dogs will keep you _____ as long as you want when you are
feeling lonely.
| A．accompany | B．company | C．friend | D．safely |
.The artist made up his mind to devote all he could ____his English before
going abraod.
| A．improving | B．to improve | C．imprve | D．to improving |
Although this medicine can cure you ____ your illness, it has a bad effect _____you.
| A．for; in | B．for; on | C．of; on | D．of; at |
The square was so named ____a famous black leader in history.
| A．in favour of | B．in search of | C．in need of | D．in honour of |