Ifyou’regoingonalongcarjourneysurethevehicle’singoodcondition.A.makeB.tomakeC.makingD.havingmade

Question

If you’re going on a long car journey _____ sure the vehicle’s in good condition.

A. make B. to make      C. making        D. having made

Answer 1

A 解析: if引导的是条件状语从句，填空句为主句，而此主句为一祈使句，故动词用原形。