Question

You’d better put a cloth over the salad to ______ the flies for the sake of health.

1. A.
   keep off
2. B.
   keep out
3. C.
   help out
4. D.
   hold out

Answer 1

A
句意: 為了健康起見，你最好用布蓋上色拉，不讓蒼蠅靠近。keep off （to stop something touching or harming sbor sth）避開；不靠近，符合題意。keep out（to not go in a place, or to stop sb or sth from going into a place）關在門外；不準入內(nèi)；help out 幫助某人擺脫困境等；hold out堅持；維持。