Does his father go to work ________?
| A．on his bike | B．on bike |
| C．by his bike | D．by the bike |
My sister has two skirts. One is yellow，and____________ is black.
| A．other | B．another | C．others | D．the other |
Money is important ____________ it’s not the most important thing.
| A．and | B．but | C．or | D．so |
Einstein，the famous scientist，was born ____________ March，1879.
| A．at | B．on | C．in | D．to |
下列各组字母中全部是元音字母的是 ____。
A. a, e, o, r B. a, i, u, e C. o, u, e, n
— When shall we leave for China?
— We won’t we have visited all the places of interest here.
| A．until | B．while | C．as | D．since |