I must admit you _____________ but I'm afraid the answer is still no.
As a Chinese saying goes, a mountain ______ be too high or an ocean too deep. Therefore, there is no end to our self-improvement.
Sometimes I act as a listening ear for fellow students ______ what is bothering them.
An increased concentration of carbon dioxide and certain other gases in the Earth’s atmosphere ______ global warming.
New York State has passed a law requiring that all legal contracts _____ in simple, understandable English.
When we first met Eliza, she had no manners, but said ______ her head, without thinking.