43. Oil prices have risen by 32 percent since the start of the year, ____ a record US$57.65 a barrel on April 4. (2005山东)
A. have reached
B. reaching
C. to reach
D. to be reaching
【解析】选B分词在句中做结果状语,可参见本单元的句型6。
44. ____ the pot for me, and don't let the milk come out. I'll be back soon.
A. Observe
B. Notice
C. Watch
D. Look out
【解析】选Cwatch 表示集中精力“照料,监视”,本句意为“帮我看着壶,别让牛奶溢出来。”;observe意为“观察”,表示动作;Notice指“注意到”表示结果;look out后面不能接宾语。