It is said that the gravity on Mars is only about __________ of the gravity on earth．
| A．three-eighths | B．third-eighth |
| C．three-eighth | D．third-eighth |
We are happy_______ you some ideas.
| A．give | B．give to | C．giving | D．to give |
---Tomorrow is my ________ birthday. Would you like to come?
----Sure, I ______ .
| A．twenty, would like |
| B．twentieth-first, would love to |
| C．twentieth , will go |
| D．twenty-first, would love to |
Do you need help _______ your Maths homework?
| A．to | B．from | C．with | D．for |
The square of fourteen is _____.
| A．one hundred and ninty-six | B．one nine six |
| C．one hundred and ninety-six | D．nineteen six |
The tower is about _________ .
| A．an 800-foot-tall | B．800 feet tall |
| C．an 800 feet tall | D．800-foot-tall |