Thanks to your help, ________ I would not have completed the task on time.
| A．however | B．because | C．so | D．otherwise |
China always plays ___ active part in fighting against ___natural disasters.
A. /; the B. an; the
C. an;/ D /; /
It was in the lab was in the charge of Mr white they did the experiment.
| A．Where; what | B．which; that |
| C．that ; where | D．that ; which. |
of the speech, he took out his novel to read.
| A．Tires; tired. | B．Tired; tires |
| C．Tired; tiring | D．Tiring; tired |
At the end of last class, the English teacher requested that the homework this morning.
| A．handed in. | B．be handed in |
| C．would be handed in. | D．had handed in. |
A number of methods been used, but the number of animals still small in the forest.
| A．have; is | B．has; is |
| C．have; are | D．has; are |