No matter how __________ she brushed the old pot, she could not make it completely clean, which made her very upset.
| A．roughly | B．occasionally |
| C．instantly | D．thoroughly |
We are deeply impressed by the goal from the conferencethe average income will double by the year 2020.
| A．that | B．which | C．what | D．whose |
Can you be honest aboutit would take to defend yourself against a gun attack?
| A．whether | B．how | C．who | D．what |
It is culture more than anything elsedetermines how a nation’s civilization evolves.
| A．that | B．which | C．why | D．as |
I always prefer to start earlyleave everything to the last minute.
| A．in addition | B．in case | C．or else | D．rather than |
“Does anybody know the definition of Nerd?”the host seated in the front.
| A．asked | B．asking | C．ask | D．to ask |