问题补充:
单选题You’dbetterputaclothoverthesaladto______thefliesforthesakeofhealth.A.keep offB.keep outC.help outD.hold out
答案:
A解析句意: 为了健康起见,你最好用布盖上色拉,不让苍蝇靠近。keep off (to stop something touching or harming sbor sth)避开;不靠近,符合题意。keep out(to not go in a place, or to stop sb or sth from going into a place)关在门外;不准入内;help out 帮助某人摆脱困境等;hold out坚持;维持。