I ______ go to bed until I ______ finished my work. a. don’t/had b. didn’t/have c. didn’t/had d. don’t/have
The _______, I think, he drew from his simple experiment is not scientific.
Alice received an invitation from her boss, ________ came as a surprise.
Most people find it hard to ________Beijing Opera to foreigners because of cultural differences.
At the age of fifteen she gave up taking piano lessons to _____ her school work.
It is still under discussion _________ the old bus station should be replaced with a modern hotel or not.