How long do you think ___________ the Microsoft brings out a new product?
To pass the driving test, Alice had a busy month driving the car.
How can they expect to learn anything_________they never listen?
Only when______senior high school_________to show a great interest in poems.
— Why are you still here? Everybody has gone to attend the lecture by the president. — Oh, I__________about it!
Mr. Duncan raised an unnecessary question he then failed to find an answer.