I find _______necessary to do everything we can ____________protect the environment.
| A．it; do | B．this is; do to |
| C．it; to | D．it; in order that |
Kate wants to be slim. _____ she never eats fast food ____ sweet snacks.
| A．And, and | B．Because, or |
| C．So, and | D．So, or |
Can you _____ the meaning (意思) of the sign (标志)?
| A．find out | B．find | C．look for | D．see |
—________ does your mother go to work?
— She often goes there ______ the bus.
| A．Why; by | B．How; by |
| C．What; in | D．How; on |
The pair of glasses over there ________ cool. Bring ________ to me and let me have a look.
| A．seems; them | B．seems; it |
| C．seem; it | D．seem; them |
This accident (事故) happened (发生) ________ a winter afternoon.
| A．in | B．at | C．on | D．with |