Mr. Smith has decided to his bad habit ofsmoking.—That’s good news. I hope he can do it.

Research _______ that over 90 percent ofhigh school students are dissatisfied with their test scores.

of ALIBABACOM，first touched a computer in1995, _______ he visited a friend living in Seattle

They will go to Beijing by plane by train.[ ]

will never understand how it that you were an hour late on such a short journey.