. The flowers his friend gave him will die unless __________ every day.
A. watered B. watering
B. water D. to water
_______he couldn't understand was_________more and more students showed interest in the computer games.
| A．What； because | B．That, what | C．What； why | D．Why； that |
The thought of going back home was ___kept him happy while he was working abroad．
| A．that | B．all that | C．all what | D．Which |
Having checked the doors were closed , and _________ all the lights were off, the boy opened the door to his bedroom.
| A．why | B．that | C．when | D．where |
______wants to stay in a hotel has to pay their own way.
| A．Anyone | B．The one | C．Whoever | D．Who |
When asked _____ they needed most, the kids said they wanted to feel important and loved.
| A．what | B．why | C．whom | D．which |