It’s necessary for human beings to breath _______ and plants can produce it.
| A．CO2 | B．H2 | C．O2 | D．N2 |
I like places __________it's not cold in winter.
| A．those | B．which | C．where | D．This |
She prefers ________at the party rather than______.
| A．to sing; dance | B．to sing ; dancing |
| C．sing; to dance | D．sing ;dance |
Do you like music ____makes you excited?
| A．that | B．what | C．who | D．It |
This is the first thing you are ________ after you get there.
| A．suppose to do | B．supposed do | C．supposed to do | D．supposed doing |
Yao Ming is a famous basketball star_______ is playing in the NBA .
A. which B. who C. when D. where