【2015•湖南】________ the job takes a significant amount of time, most students agree that the experience is worth it.
| A．If only | B．After |
| C．Although | D．In case |
Neither of them__________a worker.
| A．am | B．are | C．is | D．were |
Our knowledge of computers__________growing all the time.
| A．be | B．is | C．are | D．were |
There__________sheep in the field.
| A．are much | B．is small |
| C．is a few | D．is a little |
So far，the population of Huanggang__________7 120 000.
| A．are | B．is | C．have been | D．has |
We usually have six lessons a day，and each of them__________45 minutes.
| A．last | B．lasts | C．have | D．need |