_________, the weather in America is different from place to place.
| A．As China | B．Like in China | C．Like China | D．As in China |
---How did your students express their thanks to you on Teachers’ Day?
---A gift together with many flowers _______ sent to me.
| A．is | B．are |
| C．was | D．were |
We arrived home at 9:00 in the evening, __________most people had already had supper.
| A．at that time | B．by that time | C．at which time | D．by which time |
This book is said to be a special one, which ___________ many events not found in other history books.
| A．writes | B．covers | C．deals | D．refers |
He is only too ready to help others, seldom, ____, refusing them when they turn to him.
| A．if never | B．if ever | C．if not | D．if any |
I think the doctor is able to care of _____ is the matter with your son .
| A．all | B．what | C．whatever | D．anything |