I ________ while reading the English textbook. Luckily, my roommate woke me up in time!
| A．had fallen asleep | B．have fallen asleep |
| C．fell asleep | D．fall asleep |
—Why not find a new job?
—Why should I? I _____ as much, but I like what I'm doing.
| A．didn't earn | B．don't earn |
| C．hadn't earned | D．haven’t earned |
Mom, don’t you think it's OK to play once in a while it doesn’t affect my studies?
| A．even if | B．unless |
| C．so that | D．as long as |
The scientist spent years alone in the forest, ______ by eating wild fruit and small animals.
| A．surviving | B．survived |
| C．to survive | D．having survived |
—Wow, you have a really good voice. I_____ you were good at singing.
—Thank you.
| A．haven't known | B．hadn't known |
| C．didn't know | D．don't know |
The main street is lined with small stands and shops _____ sell almost anything you can imagine.
| A．what | B．where | C．who | D．which |