A large population in the world have no _________ to clean drinking water.
A. way D. road C. access D. space
---- How did it __________ that you made such a silly mistake?
---- I myself haven’t figured it out yet.
| A．come up | B．come about |
| C．come across | D．come on |
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 |