1. When my father was young, he _____ work in the garden for long hours. a. can b. could c. will d. should 2. He_____ have committed the crime because he was with me that day. a. mustn't b. shouldn't c. won't d. couldn't 3. Since we have to be there by 8.30, we_____ take a taxi. a. had better b. may c. ought d. are able to 4. It_____ rain this evening. Why don't you take an umbrella? a. could be b. must c. might d. had better 5. _____ you help me with the homework? a. May b. Shall c. Should d. Will 6. She hasn't eaten anything since yesterday. She_____ be really hungry. a. might b. will c. must d. can 7. I put my keys on the table, but now it's gone. Someone_____ have taken it. a. may b. had to c. should d. would rather 8. Daisy is reading her English test because she has a test tomorrow. She_____ be studying. a. will b. should c. must d. can 9. We _____ put the fish in the fridge before it spoils. a. had to b. may c. can d. had better 10. Mr. Brown is very rich. He_____ work hard for a living. a. mustn't b. shouldn't c. can't d. doesn't have to