用正确形式填空 1231——1235

1231. They are ______ (German). They aren't ______ (Englishman).

答案：Germans; Englishmen

1232. Computers can work outdifficult problems more quickly than ______  (human).

答案：humans

1233. After six hours of heavy rain,the river rose two ______ (foot).

答案：feet

1234. Mr. Chen was surprised to seethe fast _______  (develop) in Shanghai after hislong absence from the city.

答案：development

1235. Last term I took the teacher's  ______ (advise) and made greatprogress.

答案：advice