As the years passed, many occasions—birthdays, awards, graduations—________ with Dad’s flowers.

A. are marked           B. were marked         C. have marked         D. had marked

 They became friends again that day. Until then, they _______ to each other for nearly two years.

A. didn't speak        B. hadn't spoken       C. haven' t spoken    D. haven' t been speaking

 With the help of high technology, more and more new substances            in the past years.

A. discovered   B. have discovered   C. had been discovered   D. have been discovered

 — Did you tidy your room?

— No, I was going to tidy my room but I          visitors.

A. had     B. have     C. have had     D. will have

 ---It was really very kind of you to give me a lift home.

-----Oh, don’t mention it. I _____past your house anyway.

A. was coming   B. will come   C. had come      D. have come

 I got caught in the rain and my suit____.

A. has ruined  B. had ruined   C. has been ruined      D. had been ruined

 —Ouch! You hurt me!

—I am sorry. But I    any harm. I     to drive a rat out.

A. didn’t mean; tried         B. don’t mean; am trying

C. haven’t meant; tried       D. didn’t mean; was trying

 —I have got a headache.

—No wonder. You    in front of that computer too long.

A. work       B. are working    C. have been working   D. worked

 The country has already sent up three unmanned spacecraft, the most recent          at the end of last March.

A. has been launched     B. having been launched

C. being launched        D. to be launched

 Look at the timetable. Hurry up!  Flight 4026            off at 18:

A. takes                    B. took              C. will be taken          D. has taken