I shall never forget the day __________ Shen Zhou V was launched, ______________ has a great effect on my life.
—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.
Tom’s and Joan’s ____ came to London last week.