I’m not sure _______my friend can come here or not tomorrow.
A. whether B. when C. if
—Not only the young but also the old are interested WeChat（微信）．
—They can communicate more freely．
| A．by |
| B．about |
| C．in |
| D．for |
—Lily，could you please pass me the________?I want to cut the apple．
—Sure，here you are．
| A．pen |
| B．pencil |
| C．book |
| D．knife |
We wonder if our teachers to our graduating party next weekend．If they________，we’ll be very happy．
| A．will come；will come |
| B．come；will come |
| C．will come；come |
| D．come；come |
I________my hornework when my mother________in．
A．is doing；came
B．was doing；come
C．was doing；came
Hold on to your dream________it comes true．
| A．if |
| B．until |
| C．unless |
| D．though |