—How long _         like this?
— Three weeks! It's normal that it rains without stopping these days of the year．

No decision _         about any future plan until we have done some research into the student preference．

By the time you finish the book, you _______________ more about Chinese history.

--- Do you love teaching, Miss He?
--- I fell in love with teaching in 2000. I ________ for twelve years by this summer.

---Remember how we met for the first time, Dick?
---Of course I do. You _________ to the teachers' office hurriedly and ___________ me.

The Russian rocket designer has died. For many years, he ______ as an important assistant to the father of Soviet space program.  

A lot of attention ______ to greenhouse gas emission. Look at those environmental posters.

A few minutes earlier, and you would have seen the NBA star. But you ________.

Hurry up! The train _____ .You know it _____ at 10:30a.m.

---I am sure you met Alice at the party last week.
---I don’t remember her. What ______ she ______?