We could see nothing in the thick fog at a _____ of two meters, so we got lost.
| A．length | B．distance | C．space | D．way |
My suggestion is that Tom ______ there on time.
| A．is | B．be | C．will be | D．has been |
We’ve had a good start, but next, more work needs _____to achieve the final success.
| A．being done | B．do | C．to be done | D．to do |
The lady ________ have done something wrong, because she is looking guilty.
| A．would | B．should | C．can | D．must |
Close the door of fear behind you, and you _____ the door of hope open before you.
A. saw B. have seen C. will see D are seeing
Having checked the doors were closed, and _________ all the lights were off, the boy opened the door to his bedroom.
| A．why | B．that | C．when | D．where |