单项选择题
A. snowed B. was snowing C. has snowed D. had been snowing
Mr. Kimura （）a speech when I entered the hall A. made ...
单项选择题Mr. Kimura （）a speech when I entered the hall
A. made B. was making C. will make D. makes
Man has （）been to the Moon A. last B. already ...
单项选择题Man has （）been to the Moon
A. last B. already C. ago D. in
The 747 flight （）tomorrow evening at 7:00 A. arrived ...
单项选择题The 747 flight （）tomorrow evening at 7:00
A. arrived B. arriving C. arrives D. has arrived
