There are two new buildings near the sea, and ____of them are very tall.
| A．none | B．all | C．neither | D．both |
As we all know(众所周知), the dinosaur has _____.
| A．died | B．died out | C．died from | D．died of |
The kids are looking forward to ______ Spring Festival.
| A．celebrate | B．to celebrate | C．celebrating | D．being celebrated |
Everyone in the class studied very hard since no one wanted to _____.
A. fall down B fall off C. fall behind D. fall out
No matter how hard it is, just go on and never ____.
| A．give up | B．give away | C．give in | D．give off |
While you are doing math exercise, put a calculator(计算器) ____ to help you.
| A．in hand | B．at hand | C．by hand | D．on the hand |