– What a hard chair! --Yes, it is. But in fact, it is very comfortable to _____.
| A．sit | B．sit on | C．be sat | D．be sat on |
The book has helped me greatly in my daily communication, especially at work ________ a good impression is a must.
| A．which | B．when | C．as | D．where |
Lessons can be learned to face the future, ________ history cannot be changed.
| A．though | B．as | C．since | D．unless |
ourselves from the physical and mental tensions，we each need deep thought and inner quietness.
| A． Having freed | B．Freed | C．To free | D．Freeing |
Whenever you a present, you should think about it from the receiver’s point of view.
| A． bought | B．have bought | C．will buy | D．buy |
It’s not doing the things we like, but liking the things we have to domakes life happy.
| A． that | B．which | C．what | D．who |