You can only be sure of ____ you have at present; you cannot be sure of something ____ you might get in the future.
| A．that, what | B．what, / | C．what, which | D．/ , that |
She is already 18 years old, but she _____ as if she were still a little girl．
| A．believes | B．behaves |
| C．directs | D．declares |
The time has come ______ we can make extensive use of nuclear energy．
| A．when | B．which | C．since | D．while |
Your performance in the driving test didn't reach the required standard—____, you failed．
| A．in the end | B．after all |
| C．at the same time | D．in other words |
—What will you do next Sunday?
—Maybe do some shopping, for I ______go to school on Sunday．
| A．mustn’t | B．shouldn’t | C．don’t have to | D．had better not |
Asia is important to America because America’s future _____ trade with Asia’s growing economies．
| A．depends on | B．takes off | C．sets up | D．breaks out |