燃气管道的附属设备不包括（）。

You will have to practice ______ times before you can do it.

A．many more

B．more often

C．more many

D．more several

You have to pass the test _you can get the driving license.

A.if

B .as

C.while

D .before

You have to take the______examination before an interview can be considered.

A．precious

B．preliminary

C．prior

D．potential

Before you can fly a plane in the sky you have to learn the ______ of flying it.

A．skill

B．technology

C．knowledge

D．ability

Your parents have to ______ you permission before you can go for the excursion.

A．award

B．grant

C．allow

D．offer

Before you can start a business up, you have to raise the necessary______.

A．investment

B．income

C．savings

D．capital

You have to take the ______ examination before an interview can be considered.

A．precious

B．preliminary

C．prior

D．potential