Of the two physics problems， Martha just finished ______ one．（ ）
A．the most difficultB．the least difficult
C．the less difficult
If Tom_________ the game, he will be the__________.
| A．win; winner | B．will win; winner |
| C．wins; winning | D．wins; winner |
--- Hurry up! The bus is coming.
--- Wait a minute.Don’t cross the street the traffic lights are green.
| A．after | B．until | C．while | D．Since |
— Was it under the tree ________ you were away talking to a friend?
— Sure.But when I got back there, the bike was gone.
| A．that | B．where | C．which | D．While |
Talk to your teacher and you will get help ________ you have a problem.
| A．unless | B．if | C．until | D．so |
They got up early_____ they could catch the early bus.
| A．that | B．in order to |
| C．so that | D．to |