30.The problem lies in ______ the mist may become a thick fog , making the situation even worse.
| A．that | B．which | C．what | D．that whether |
– You seem to have learnt it by heart.
--- Yes, I_________.
| A．seem | B．have | C．do | D．did |
– He looks as if he _____the answer.
--- He has.
| A．has known | B．knows | C．had known | D．knew |
The children were packing up in a hurry, for the night ________.
| A．draws near | B．drew nearer |
| C．was drawn near | D．drew near |
It’s hard for people to make their way ________.
| A．in the rushing hours | B．at the rushing hours |
| C．at the rush hours | D．on the rush hours |
For little kids, drawing is ____.
| A．necessary done | B．necessarily done |
| C．necessary to do | D．necessarily to do |