How many students are there in your classroom—There are__________.

The last half of the nineteenth century _____ the steady improvement in the meansof travel

It is said that another new car factory＿＿＿＿＿now—— Yeah.It ＿＿＿＿＿one and a half years

Why didn’t you come to the concert last night?-I_________,but I had an unexpected visitor.[ ]

Once or twice he has had difficulty making decision on his own, buthe is an independent man