Although you may meet some difficuIties,you should never .
---Excuse me, is this seat taken?---_______ . That man got his books and left a few minutes ago.
Could you tell me _______ there?
Jane’s mother preferred ________ TV at home to _______ to the concert.
--- _______ will your parents take you to Shanghai?--- In about two months, after I finish the final exam.
You have finished most of the work, so you _______ start working so early tomorrow.You _______ come at 9.00.