1. + __________ you (be) __________ to Phong Nha before? + Yes. I (spend) _____________ my holiday there last summer. 2. Alexander Graham Bell (invent) _____________ the telephone many years ago. 3. I must go now. I (phone) ________ you when I (arrive) ______________ there. 4. When I last (see) __________ them, they ( work) ___________ in a factory in Hanoi.
2 câu trả lời
1/ Have you been - spent
2/ invented
3/ will phone - arrive
4/ saw - were working
Câu hỏi trong lớp
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