The children are having __ good __ now,
—I have worked hard at math, but it seems that I haven’t made any progress. —Keep on _____ at it, and you will be successful. A. work B. working C. to work
—This physics problem is too difficult. Can you show me _____, Wang Li? —Sure. A. what to work it out B. what to work out it C. how to work it out
In the past, the workers _____ do a lot of hard work. A. forced B. forced to C. were forced to
I’m afraid I have to _____ the doctor’s advice. A. follow B. receive C. carry
—Hi, Jane, tell you a piece of good news. I _____ America tomorrow. —Wow, have a good trip! A. will leave to B. am leaving for C. going leaving for