281. Many hands make light work.__________ is strength.
| A．Union | B．Nation | C．Uniform | D．Unifying |
| A．to prove | B．proving | C．proved | D．having proved |
| A．gets | B．makes | C．puts | D．means |
| A．a; / | B．the;/ | C．a ; the | D．/; the |
When _________ an egg for the first time, the hen lay in the doghouse.
| A．lay | B．lying | C．laying | D．laid |
It is obvious __________ he has no chance to go to college.
A. that B. whether C what D. Which