This is the tallest building ________ I’ve ever seen.A. which B. who C. that
--- Will he come? --- I am not sure ___he will come, but I never doubt ______he will help us.
--- Jack’s parents hardly have any spare time for him, ________they?--- _________,that’s why Jack often feels lonely at home.
---Do you know why people set off fireworks ? --- Well, in ancient China, people set off fireworks on New Year’s EVE that the loud noise could drive away bad spirits .
---She devoted as much time as she could _____________patients.---So she did.
---I often feel worried about exams. I don’t know ________________it.---Maybe you can ask your teacher for help.