--- How long has the film been on?

--- For twenty minutes. It ________ at half past six.

--My spoken English is poor. What shall I do?

--That's easy. Practise ________ it as much as possible.

“Where are your trousers?”

“________.”

“Can you ________ French?”

“Yes, I can, but ________.”

--Dear me! What a wonderful computer!

--My grandma bought it for my sister and me. It’s _______.

---Sorry, I can’t work out this problem.

---Try again, please. It’s only ______ difficult.

-________?

-On foot．

--Do you know Taiwan, Jenny?

--Yes, of course．Taiwan is ________ island．It belongs to China.