John always tries to _____ people who are useful to him professionally.
| A．develop | B．provoke | C．correspond | D．cultivate |
It is ______ that we can’t finish it on time.
| A．so a hard job | B．such hard a work | C．such a hard job | D．so hard a work |
He found that his house had been ______ and some important files were lost.
| A．broken into | B．taken out | C．made into | D．run out |
---Did you tell Julia about the result?
---Oh, no, I forgot . I _____ her now.
| A．will be calling | B．will call | C．call | D．am to call |
He was walking along the sands ______ he saw a big footprint in the sand.
| A．while | B．as | C．when | D．after |
In public places, we can often see ______ that tell us useful things, such as no parking, no smoking, etc.
| A．symptoms | B．signs | C．systems | D．signals |