I don’t know whether you happen_______, but I’m going to study in the U.S.A. this September.A. to be heard B. to be hearingC. to hear D. to have heard
Xi’an is ______ most beautiful tourist city and I believe I’ll come for _______ second time.
Mr. Wang, who _____ in this city ever since thirty years ago, _____ a report for the last two years.
— Doesn't this bus go to the park? — ________.
These are all ________houses for the homeless.
— Were you worried about him last night? — Yes. It was ________.