In the front of the hall _______ a group of pupils, who were listening to the lecture attentively.
| A．were sitting | B．sat | C．sit | D．was sitting |
An army spokesman stressed that all the soldiers had been ordered _____ clear warning before firing any shots.
| A．to issue | B．being issued | C．to have issued | D．to be issued |
The pale face of my friend suggested that he ______ in poor health, and I suggested that he ______ to see a doctor.
| A．is; went | B．was; goes | C．should be; go | D．was; go |
______ is obvious that reading in bed does great harm to your eyes.
| A．This | B．That | C．They | D．It |
Anything ______ could be found has been used to repair the damaged bridge.
| A．that | B．which | C．when | D．what |
The concert last month was ______ that all the audience wanted to attend it once again.
| A．so success | B．such success | C．so a success | D．such a success |