Question

Choose the best option.
a. He musted/had to start work at six every morning when he was a postman.
b. You have to/mustn't work hard to be successful.
c. You needn't/mustn't eat those leaves. They might be poisonous.
d. I'm happy because I mustn't/needn't get up early tomorrow.
e. You don't have to/mustn't smoke in the library.
f. She hadn't to/didn't have to wear a uniform.
g. I must/have to remember to pay the phone bill.
h. Hey! You mustn't to/mustn't park there. It's private!
i. You needn't/have to drive on the left in the UK.
j. I must/must to take more exercise.​

Answer 1

a. he had to start work at six every morning when he was a postman.

b. you have to work hard to be successful.

c. you mustn't eat those leaves. they might be poisonous.

d. I'm happy because i needn't get up early tomorrow

e. you mustn't smoke in the library

f. she didn't have to wear a uniform

g. i must remember to pay the phone bill

h. hey! you mustn't park there. it's private!

i. you needn't drive on the left in the UK

j. i must take more exercise