It was until dark ___ he found ___ he thought was the correct way to solve the problem.
In the TV ad, the actress is asked to jump with her mouth ________ open, showing her ________ teeth.
It is universally believed that a student with an extremely ________ mind usually gets high scores in the exams, especially in the physics exam.
Smiling doesn't ________ mean you're happy.Sometimes, it just means that you're strong enough to face problems.
—In early autumn Steve applied for admission to college.He wanted to go ________ but to Cornell University. —Oh, why not Harvard?
—Hello! Friendship Hotel.Can I help you? —Do you have a room with a double bed ________ for Saturday?