Tom has to leave now _________ he can catch the train.

My English teacher said I’m hard-working. —Really? You’re _______.

.Put it down，Tom. You mustn’t read _letter.

People say your little brother has been admitted into QinghuaUniversity.—Yes. Never ________ he could achieve so much success.

_____ do you watch TV every day?—For about half an hour.[ ]