70. I know it is difficult __________ him to talk like the lecturer, but I think he should grasp every chance .
| A．of | B．for | C．with | D．Over |
______ was most important to her, she told me, was her family.
| A．This | B．What | C．As | D．It |
If the weather is fine, we’ll go. If ______, ______.
| A．not; not | B．no; no | C．not; no | D．no; not |
－Why does the river smell terrible?
－Because large quantities of water______．
| A．have been polluted | B．is being polluted |
| C．has been polluted | D．have polluted |
Whenitcomestowhethercampusloveshouldbe______, there is no agreement among people.
| A．applied | B．refreshed | C．sponsored | D．advocated |
Music should be taught routinely in schools because of the benefits _____ can have on the development of the brains of young children.
| A．which | B．that | C．one | D．it |