摘要： I haven’t heard from him for a long time.
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—I haven’t heard from him for a long time
—What do you think _______?
A was happening B to happen C having happened D has happened
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－What do you think ________?
[ ]
A．was happening
B．to happen
C．having happened
D．has happened
-I haven't heard from Henry for a long time.
-What do you think ________ to him?
A. happening B. to happen C. has happened D. had happened
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