1/"did you notice anything while you...home last night?" A.drive B.are driving C.drove D.were driving 2/He....to sell it for months,but nobody wants it A.had tried B.is trying C.has been trying D.tries 3/....from Alison and Frank so far? A.did you hear B.you have hear C.had yoy hear D.have you hear 4/London...an underground train system since the nineteenth century. A.have had B.has had C.had had D.had
2 câu trả lời
1. D - while S + Ving
2. C - for → present perfect continuous
3. D (hear → heard)
4. B - since → present perfect
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