It was reported that three million tons of coal----exported last year.a.was b.were c.is d.are (b)
I am told the interview will be ------.
a.at 8.30 a.m.b.tomorrow a.m.c.at a quarter past eight a.m.
d.half past eight,morning (a)
three million tons of coal个人觉得是单数啊？