The problem is _________ we can finish the work in time.
| A．what | B．whether | C．that | D．if |
It is widely __________ that the government should take effective measures to reduce the poor-rich gap, which is approaching the alarming line.
| A．appointed |
| B．concluded |
| C．announced |
| D．acknowledged |
I __________ my homework yesterday, but unfortunately I forgot about it totally.
| A．need have handed in |
| B．should have handed in |
| C．must have handed in |
| D．may have handed in |
Some insects __________ the color of their surroundings to protect themselves.
| A．take in |
| B．take off |
| C．take on |
| D．take out |
Do you wake up every morning __________ energetic and ready to start a new day?
| A．feel |
| B．to feel |
| C．feeling |
| D．felt |
In that school, English is compulsory for all students, but French and Russian are __________
| A．special |
| B．regional |
| C．optional |
| D．original |