单项选择题
A.that B.whom C.which D.what
A. Put up your hands. B. Don’t move or I’ll shoot you. C. If you want to have lunch, you must listen to me. D. You go first slowly and we’ll have lunch together.
A. to estimate the length of cable that was to be made B. to make some sound experiments in the oceans C. to measure the depths of two oceans D. to collect samples of sea plants animals