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• 1. It’s easier ___ than___. • A. say, do B. to say, to do C. says, does D. saying, doing • 2. Is __ necessary to take off our shoes when we enter the lab? • A. everyone B. this C. that D. it • 3. It is no use ___ forward to ___from her soon. • A. to look, to hear B. looking, hearing C. looking, hear D. look, hear • 4.It takes me 30 minutes ___ to school by bike every day. • A. going B. to go C. goes D. go • 5. ___ is certain that his invention will make people’s life convenient. • A. That B. This C It D. What