People in China don’t like hugging each other when meeting, which _________ a common __________ in some European countries.
| A．are, practice | B．is; exercise | C．are; exercise | D．is; practice |
The water in the river isn’t fit to drink, for you know, it __________.
| A．was polluted | B．was polluting |
| C．had been polluted | D．has been polluted |
I hear Mr. Smith was writing a story last year and he still__________.
| A．do | B．does | C．is | D．am |
I haven’t seen _________ Maggie since I came here.
| A．as lovely a girl as | B．so a lovely girl as |
| C．girl as lovely as | D．as a lovely girl as |
He is rather difficult to make friends with, but his friendship, ________, is more true than any other.
| A．after gaining | B．while gaining |
| C．once to gain | D．once gained |
Many people can’t learn any lessons from the mistakes they’ve made __________ they get hurt somehow.
| A．whether | B．unless | C．if | D．as |