.---Susan, what are you talking about?
----_____I can finish writing the report on time.
| A．If | B．When | C．Whether | D．What |
Ted came for the weekend wearing only some shorts and a T-shirt，__________ is a stupid thing to do in such weather.
| A．this | B．that | C．what | D．which |
She has a gift for creating an atmospherefor her students __________ allowsthem to communicate freely with each other.
| A．which | B．where | C．what | D．who |
In China, the number of cities is in-creasing __________ development is recognized across the world.
| A．where | B．which | C．whose | D．that |
The old town has narrow streets and small houses __________ are built close to each other.
| A．they | B．where | C．what | D．that |
Thisis the best book __________ I've ever bought.
| A．that | B．who | C．with which | D．which |