The problem is too difficult for him. He _______ solve it by himself without any help.

—By       local farmers, we hope        them improve their lives.—I think it’s a good idea. 

—He must be in the reading-room now. We will find him there. ---No, he _____.Tom said he was ill at home .

—Look! Is that Mr. Green?—It          be Mr. Green. He has gone to Shanghai.

—I visited France last year. —That         interesting.