The rabbit ________ Lily keeps in the garden is white.
| A．which | B．who | C．whose | D．where |
Comparison may make something appear more beautiful than it is when _____ alone．
| A．seen | B．seeing | C．see | D．to see |
—What do you do, Rita？
—I’m a clerk in a foreign company now．But I _____ English in a high school for 10 years．
| A．teach | B．have taught |
| C．taught | D．am teaching |
—How are you getting along with your German, Kate？
—Oh, Mr．Black, I’m so tired of it．Maybe I should drop out _____ it kills me．
| A．when | B．after | C．while | D．before |
A public health campaign _____ the number of heart disease deaths by 80 percent over the past three decades．
| A．had reduced | B．had been reduced |
| C．has reduced | D．has been reduced |
If it _____ earlier, the printing machine would not have broken down．
| A．has been repaired | B．is repaired |
| C．had been repaired | D．was repaired |