If trees continue _______ at the present rate, it won’t be _______there is no trees for shade.
| A．to cut down; long before |
| B．being cut down; before long |
| C．to be cut down; long before |
| D．cutting down; before long |
—I didn't go to see the doctor yesterday.
—But you ________.
| A．ought | B．ought to |
| C．ought to be | D．ought to have |
I don't mind her criticizing me，but ________ is how she does it that I object to.
| A．it | B．that | C．this | D．which |
It was last night ________ I saw the comet.
| A．the time | B．when | C．that | D．which |
—Did Linda see the traffic accident?
—No，no sooner ________ than it happened.
| A．had she gone | B．she had gone |
| C．has she gone | D．she has gone |
________you said at the meeting describes a bright future for the company.
| A．When | B．How | C．What | D．That |