I sight of an empty seat at the back of the bus and went directly there.
| A．lost | B．caught | C．looked | D．took |
．—Are my clothes too casual?
—No. You can go_________you are.
| A．as | B．what | C．that | D．where |
Please turn down the music, _________our neighbors next door will be disturbed.
| A．and | B．or | C．but | D．so |
In summer, food will go bad if_________in room temperature.
| A．leaving | B．left | C．being left | D．having left |
．QQ, _________you can chat with your friends, makes communication easy.
| A．why | B．which | C．that | D．where |
_________fit, we ought to learn more about our body and be careful with what we eat.
| A．Keeping | B．To keep | C．Having kept. | D．To have kept |