Thank you for all your hard work last week. I don’t think we ______ it without you.
| A．can manage | B．could have managed |
| C．could manage | D．can have managed |
It is not immediately clear __________ the housing price will go down.
| A．how | B．what | C．that | D．whether |
T0 be a“tough girl” means you are not only __________tough, but also mentally independent.
| A．extremely | B．partly | C．physically | D．practically |
Beijing has struggled with smog for years，which has__________ the sun and affected the health and quality of life of millions.
| A．driven away | B．pushed out | C．broken off | D．blocked off |
Between the lectures is a 20 minutes’break，__________the students can get relaxed.
| A．that | B．which | C．where | D．when |
The speech from the new government is a __________ that major changes are on the way．
| A．notice | B．feature | C．signal | D．mark |