Before a problem can be solved, it must be obvious ______the problem itself is.
| A．what | B．that | C．which | D．why |
--Did you enjoy yourself yesterday?
--Yes. As you saw , ________ party went on in____________ most pleasant atmosphere.
| A．the; a | B．the; the | C．a; the | D．a; a |
Flight BA 123 to Vienna is now boarding at
| A．Gate 21 | B．21St Gate | C．the Gate 21 | D．21 Gate |
He didn’t seem to mind_____________ TV while he was trying to study
| A．them to watch | B．that they watch |
| C．their watching | D．watching |
I don't skate now, but I___________ when I was a kid.
| A．used to | B．am used to it | C．sued | D．used to do |
. We liked the oil painting better____________ we looked at it.
| A．as | B．while | C．the | D．the more |