Scientists generally agree that Earth’s climate will warm up over the next 50 to 100 years ________ it has warmed in the 20,000 years since Ice Age.

Do you know the lady ____ is interviewingour headmaster—Yes, she is a journalist from CCTV.

Where did you see the sponsor, Madame?— It was in the supermarket _______I was doing some shopping with my husband [ ]

Mr. Li, I have let the cat out of the bag already, so I _____ as well tell the whole thing.[ ]

e the head-teacher had some important guests to meet, the meeting only _______a few minutes.