The boy’s dream was to have his own laboratory ________ to try out some of his own ideas.
She won’t be able to come next week, because she_________herself in Mount Tai then.
When a student asks__________it is worth staying up doing their lessons, a teacher may find it difficult to answer.
Mr. Li arrived at the Wuguang train station twenty minutes ago, but the train to Guangzhou_______yet.
To pass the driving test, Alice had a busy month driving the car.
How can they expect to learn anything_________they never listen?