We should think hard ________ human activity has caused greenhouse effect.
| A．it is how that | B．how it is that |
| C．that how is it | D．how is it that |
This year the farmers were just able to gather in the _____ before the fine weather came to an end.
| A．collection | B．harvest | C．flower | D．plant |
He hated the war so much that he decided to leave the army _____.
| A．for long | B．once in a while | C．for good | D．once upon a time |
We suddenly saw the bus about to leave and had to run _____ to catch it.
| A．hardly | B．awkwardly | C．hard | D．strongly |
If we can _____ our present difficulties, then everything should be all right.
| A．get off | B．come across | C．come over | D．get over |
Many university courses are not really _____ to the needs of students or their future employers.
| A．associated | B．relative | C．geared | D．sufficient |