单项选择题
A. She herself will go and check what the problem is. B. She herself will put the guest through to Brussels. C. She will let the guest make a directly dialed call. D. She will ask somebody else to go and check what the problem is.
A. continued to increase. B. continued to decrease C. didn’t change. D. jumped
A. Write their lab reports. B. Find out Professor Smith’s schedule. C. Interview some high school students. D. Finish their chemistry experiment.