Although the first part is easy, the rest ______.
| A．is supported difficult | B．are difficult |
| C．has proved difficult | D．could have been difficult |
----Is this the first time you ________ to Harbin?
---- No, but the first time I ____ here, the city wasn’t so beautiful.
| A．visited; came | B．visited; have come | C．have visited; have come | D．have come; came |
Mistakes don’t just happen; they occur for a reason. Find out the reason, and then making the mistakes becomes ______.
| A．favorable | B．precious | C．essential | D．worthwhile |
During the floods the cars, trains and buildings could not survive, ____the people who stood in the way.
| A．or rather | B．let alone | C．more or less | D．besides |
If I try to correct someone, I have to do it with so much good humor and bright smile as if I were the one ______.
| A．to have been corrected | B．correcting | C．having been corrected | D．being corrected |
It shocked me to see ______ my neighbors treated their children.
| A．why | B．whether | C．how | D．since |