Most birds find it safe to sleep in the trees,butthey have eggs or young chicks,they don't use a nest.
| A． | why | B． | how |
| C． | unless | D． | where |
Eating too much fat can_______heart disease and cause high blood pressure.
| A．result from | B．contribute to | C．attend to | D．devote to |
He has a big family to__________
| A．feed on | B．rise | C．raise | D．bring up |
How about taking______short breake? I want to make______call.
| A．the; a | B．a;the | C．the;the | D．a;a |
His letter was so confusing that I could hardly make any ___ of it.
| A．explaination | B．meaning | C．sense | D．guess |
In that country, you can see the temple ___ the 12th century.
| A．dated from | B．dated back to | C．belonged to | D．dating from |