Our waste recycling project ________ a lot of investigation and paperwork had been done by the end of last term.
A.involved B.to involve
C.being involved D.involving
Every morning Jack's wife will stand before the mirror, ________ carefully until she has to go to work.
A.dressed B.dressing
C.to dress D.having dressed
________ for a whole night, we still couldn't agree on when to start and where to go for the holiday.
A.Discussed B.Having discussed
C.Discussing D.Being discussed
In my opinion, keeping dogs well ________ up is advisable for dog owners.
A.to tie B.being tied
C.tied D.to be tied
The old couple, ________ in the small village for years, can tell the names of all the villagers.
A.living B.lived
C.having lived D.to have lived
The gas price keeps rising, ________ an average of 7.7 yuan per liter this month.
A.hit B.to hit
C.hitting D.hits