Nuclear ______ be really dangerous at times even though it’s a nice energy in general.
| A．shall | B．should | C．can | D．must |
Please remain seated until the plane_____to complete landing.
| A．has come | B．had come | C．will come | D．comes |
Eating too much fat can_____ heart disease and cause high blood pressure.
| A．result from | B．result into | C．contribute to | D．devote to |
I think it is you rather than the student who____ for being late for the speech.
| A．is to blame | B．are to blame | C．is to be blamed | D．are to be blamed |
The teacher was _____in thoughs when I came to see him.
| A．deeply | B．stuck | C．losing | D．absorded |
______, he couldn’t get the door open.
| A．Might as he try | B．As he might try | C．Try as might try | D．Try as he might |