12．We have to study for a bright future, so we have to lose some sleep_________we're worn out.
| A．in case | B．as though | C．as long as | D．even though |
He _________ harder this year than last year.
| A．study | B．studies | C．was studying | D．studied |
--__________ we make it half past seven?
--What about _______ it a little earlier?
| A．Shall, making | B．Shall, to make | C．Will, making | D．will, to make |
The soldier ran into the room _________the baby.
| A．saving | B．to save | C．saves | D．saved |
Please don't forget _______to me, will you?
| A．to write | B．writing | C．write | D．writes |
You _________ never play in the street. It's not safe.
| A．can | B．may | C．must | D．need |