Not until the early years of the 19th century _____ what heat is.
| A．man did know | B．man knew | C．didn’t man know | D．did man know |
The flight attendant welcomed us ___ the plane.
| A．abroad | B．aboard | C．board | D．broad |
______, a man who expresses himself effectively is sure to succeed more rapidly than a man whose command of English is poor.
| A．Other things being equal | B．Other things be equal |
| C．To be equal to other things | D．Other things to be equal |
-----Shall we go to the art exhibition right away?
-----_____.
| A．It’s your opinion. | B．I don’t mind. | C．It’s all up to you. | D．That’s your decision. |
It was a matter of________ would take the position.
| A．who | B．whoever | C．whom | D．whomever |
In China, all the students work hard at school _________ going to university for higher education in the future.
| A．in the habit of | B．in the hope of | C．in search of | D．in honor of |