The document discusses the correct use of the modal verbs "must" and "have to" based on 10 multiple choice questions. It tests whether "must", "have to", or both are appropriate in sentences describing obligations or necessities like having to leave early, going to work, wearing uniforms, seeing friends, calling a doctor, working hard, working late, and needing to wear glasses. The questions cover using these modals for past and present situations and whether they refer to rules, plans or health issues.

1. Modals - Using MUST & HAVE TO
Choose the correct modal verb to fill the gaps. You can use MUST or HAVE TO. In some cases, both are
correct; if you think both are correct, choose the option BOTH.
1. Tom left before the end of the meeting. He __________ go home early.
a) must b) had to c) both
2. It's later than we thought. We ________ go now.
a) must b) have to c) both
3. In China many children ________ wear uniforms when they go to school.
a) must b) have to c) both
4. When you come to Shanghai again, you ________ come and see us.
a) must b) have to c) both
5. Yesterday Paul became ill suddenly. We _________ to call the doctor.
a) must b) had to c) both
6. You really _________ work harder if you want to succeed in this job.
a) must b) have to c) both
7. I'm afraid I can't make it to the party tomorrow. I _______ work late.
a) must b) have to c) both
8. I am sorry I couldn't make it to the party yesterday. I _______ work late.
a) must b) had to c) both
9. Tony dislikes his new job. He _______ work at the weekends.
a) must b) has to c) both
10. David wears glasses. He ___________ wear glasses since he was very young.
a) must b) had to c) both
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