Only when one leaves his homeland ______ how much he loves his motherland.
| A．he will realize | B．will he realize | C．has he realized | D．he has realized |
—I’d like to be on my own for a while. Do you mind? —________. Go ahead.
| A．Not in the least | B．No way |
| C．Yes, of course | D．I’m afraid so |
—Oh, my God! My English book is nowhere to be seen.
—You __________ it at home.
| A．should have left | B．would have left |
| C．must have left | D．could have left |
To their relief, the doctor told them that if proper _______, Betty could recover very soon.
| A．treating | B．treated |
| C．being treated | D．to be treated |
_______ there are many different types of food, some animals spend their lives eating only one type.
| A．Since | B．Unless |
| C．Once | D．While |
As the Internet has gained popularity, there has been a change in the way ______ people spend their time.
| A．which | B．in which |
| C．where | D．when |