—I am thinking of the test tomorrow. I am afraid I cannot pass this time.—_________! I am sure you will make it.
240. It is an important problem. You should ________ before you draw a conclusion.
239. He_____ me 50 yuan and didn’t return it to me until last night.
238. --- Ought he to get down to his work at once? --- Yes, he _____.ought B. ought to C. must D. should to
237. Our teacher will _____ our class a picnic at the riverside tomorrow if the weather permits.
236. His order is _____ we ______ complete the task in five days.