It is difficult for any of us to eat better, exercise more, and sleep enough,________ we know we should.
| A．because | B．even if | C．unless | D．before |
—Paul has gone abroad to try his luck.
—In my________，his decision is not wise.
| A．word | B．view | C．sight | D．way |
—Why don't you take a taxi there? It will save you a lot of time.
— __________.
| A．Thank you | B．That's all right |
| C．Good idea | D．You are welcome |
He stayed up late into night yesterday. This is __________ he was late for school.
| A．because | B．why | C．that | D．what |
From the __________ expression on her face, we knew that she was very __________ with the result.
| A．exciting; pleasing | B．exciting; pleased |
| C．excited; pleased | D．excited; pleasing |
On Mother's Day, mothers often receive a bunch of carnations (康乃磐) as a __________ of love from their children.
| A．means | B．signal | C．symbol | D．sign |