The stronger the _____is, the more quickly a man will learn a new skill. In other words, it is up to whether he has an interest in it.
The car is environmentally friendly because it uses electricity instead of gas. _____, it is less expensive.
She showed me a red silk dress _____ online, which cost her only 10 dollars.
Having no enough time to practice, the girl wondered whether she _____ pass the driving test.
I recorded the professor’s speech on my cellphone _____ I could listen to it several times later.
—You seem tired, David. —Yes. I _____ all day long and can’t wait to go to bed now.