Question

We knock _____people’s doors, and they usually give us some candy _____ a treat.
A. on, to           B, at, to           C. on, as           D. on, on

Answer 1

C

考查固定結(jié)構(gòu)。Knock on+window/door,敲門(mén)或敲窗戶(hù)；as作為。我們敲人們的窗戶(hù)，然后他們給我們糖果作為款待。選C。