________ nearly all behavior is learned behavior is a basic assumption ________ has been put forward by social scientists.
| A．What; that | B．That; what |
| C．What; what | D．That; that |
There must have been a large number of tourists in Sanya during the past Spring Festival, __________?
| A．mustn’t there | B．haven’t there | C．wasn’t there | D．didn’t there |
The newly-discovered star was named _____ a Chinese astronomer ________of his contributions to astronomy.
A．for; in favor of |
B．after; in honor of |
| C．by; in memory of | D．as; in praise of |
–Excuse me. Can you spare me a few minutes?
--_________
| A．What’s on? | B．What’s up? | C．What’s more? | D．What is it? |
_______ we admit that there are still some problems about the system of modern education, we don’t mean that it is of no use.
| A．Until | B．While | C．As | D．Unless |
All the employees except the manager _______ to work online at home.
| A．encourages | B．encourage |
| C．is encouraged | D．are encouraged |