How kind you are! You always do what you can ____________ others.
A. help B. helping C. helps D. to help
We are not sure if it ________ tomorrow. If it________, we won’t go hiking.
A. will rain； rains B. will rain ； will rain
C. rains； rains D. rains； will rain
—It’s necessary and important for the students at school to join the Clean Plate Campaign. It’s good for them to form good habits.
—Sure. We should try to _______ all the food that we’ve ordered.
A. give up B. eat up C. turn up D. show up
My parents want me to get further study to be ________ an engineer _______ a scientist, ________ I would like to be a famous surgeon doctor.
A. neither； nor； and B. either； or； but
C. not only； but； so D. both； and； or
Most boys ______ guns to dolls while most girls _____ have dolls than guns.
A. would rather, prefer B. prefer, would rather
C. would rather, would rather D. prefer, prefer
─Do you know_____second-hand smoke? ─To protect our health and memory.
A. how we should prevent B. how we should prevent
C. why we should prevent D. whether we should prevent
