It is known to all that a proper amount of exercise _______ to good health.
| A．benefits | B．devotes | C．values | D．contributes |
I think hard work can ___ success in the end.
| A．lead | B．lead to | C．lead into | D．lead of |
Worms like to dig tunnels ___.
| A．on earth | B．in the earth | C．in the world | D．on the earth |
The weather ___ hot, we all went to the seashore.
| A．is | B．are | C．was | D．being |
My aunt’s hens have ___ many eggs recently.
| A．lain | B．laid | C．lay | D．lie |
Einstein got __letters from the people all over the word.
| A．hundreds of thousands of | B．hundreds of thousand of | C．hundred of thousand of | D．hundred of thousand |