It is really difficult to ___ there few flats among so many people.
| A．separate | B．divide in | C．separate up | D．divide up |
A person ________ with H7N9 viruses will be more likely to die of lung dysfunction.
| A．developed | B．infected | C．injected | D．progressed |
The children talked so loudly at dinner table that I had to struggle _________
| A．to be heard | B．to have heard | C．hearing | D．being heard |
At present, computer knowledge has become ___________ requirement as the ability to read and write.
| A．so basic a | B．so a basic | C．as basic a | D．as a basic |
Make sure the gas is turned off after a bath, which would ________ cause danger.
| A．somehow | B．meanwhile | C．otherwise | D．furthermore |
Bats are surprisingly long-lived creatures, some ________ a life span of 20 years.
| A．having | B．had | C．have | D．to have |