He_____ articles for our wall-newspaper these years, and he____ about thirty articles.
| A．has written; wrote | B．has been writing; wrote |
| C．is writing; has been writing | D．has been writing; has written |
He devoted himself entirely to his research into viruses and it earned him a good _________in his field.
| A．impression | B．attraction | C．contribution | D．reputation |
Hannah was busy with work then but she still tried her best to some time from her tight schedule to visit her mother.
| A．cut out | B．squeeze out | C．leave out | D．dig out |
Success _________three key factors: diligence, talent and luck, of which the first one is of great importance .
| A．breaks down | B．puts up | C．divides into | D．consists of |
These companies succeeded because they were the first companies to make use of the ____________ of the internet and was thought highly of by some experts.
| A．potential | B．possibility | C．prejudice | D．precious |
Don’t expect too much of him. After all , he is a child of ______ intelligence.
| A．average | B．slight | C．absolute | D．firm |