With the successful launch of Tiangong-l, which was _____ breakthrough in space field,China's space dream took a step closer to _____ reality.
| A．a;/ | B．the； a | C．a; the | D．the;/ |
A professor and a writer present at the meeting.
| A．was | B．is | C．were | D．had been |
His family music lovers.
| A．all are | B．are all | C．is | D．are being |
Those who singing may join us.
| A．are liking | B．likes | C．enjoy | D．is fond of |
There a knife and fork on the table.
| A．seems to be | B．seem to be | C．is seeming to be | D．are |
Over 80 percent of the population of China peasants.
| A．was | B．is | C．are | D．will be |