Living in the central American desert has its problems, ________ obtaining water is not the least .
| A．of which | B．for what | C．as | D．whose |
That dog ought to be destroyed it attacks any more children.
| A．until | B．since | C．after | D．before |
So tired of corn-bread that he eats it with tears in his eyes.
| A．is he | B．he is | C．he was | D．was he |
—I want to tell you something.
—You what? I can't hear you're saying.
| A．why | B．what | C．that | D．where |
—Have you ever been to Australia?
—No. I’d like to, .
| A．even | B．though | C．too | D．meanwhile |
—Here are the designs. do you prefer?
—I think looks the most original.
| A．What; that | B．What; it | C．Which; it | D．Which; that |