Question

—Henry doesn’t seem like the same person. — ________ so much in the war has made him more thoughtful.

A. For him to see  B. His seeing  C. Having seen  D. To be seeing

Answer 1

B

解析:

很明顯答語在結(jié)構(gòu)上缺少主語。To do 與-ing都可充當(dāng)主語，但 to do充當(dāng)主語多表示某一具體的動作，且多表將來。故選B。