—Why didn’t you invite John to your birthday party?—Well, you know he’s _______ .
—I’d like to invite you to my new house next weekend. —Thank you, but ____ I’ll have time I’m not sure at the moment.
—How long do you suppose it is ____ he? —No more than half a week.
___ China’s reform(改革)and opening up in fate 1978, its quick development has aroused worldwide attention.
We were told that we should follow the main road ___ we reached the central railway station.
Scientists say it may be five or six years ___ it is possible to test this medicine on human patients.