It’s the __________ in the west to open a present when someone gives __________ to you.
| A．custom, one | B．habit, one | C．bobby, it | D．favour, it |
As is reported, it is 100 years______Qinghua University was founded.
| A．when | B．before | C．after | D．since |
He had his camera ready____ he saw something that would make a good picture.
| A．even if | B．if only | C．in case | D．so that |
They were busy ________ an experiment when I came.
| A．doing | B．to be doing | C．with doing | D．to do |
“Harry Potter” is said ______ into over twelve languages by the end of last year.
| A．to be translated | B．being translated |
| C．having been translated | D．to have been translated |
From his ____ look, I knew that the questions during the interview were ______.
| A．puzzling; puzzled | B．puzzled; puzzling |
| C．puzzling; puzzling | D．puzzled; puzzled |