---- ____ he start at once or wait for a while?
--- Let him start at once.
| A．Will | B．Would | C．Shall | D．Can |
Karaoke, which was invented by the Japanese, ______ both wonders and problems.
| A．has been produced | B．was produced | C．produced | D．has produced |
European football is played in about 80 countries, _____ it the most popular sport in the world.
| A．making | B．made | C．to make | D．makes |
Obama didn’t explain ______ any larger principles have guided him through the historic convulsions of the 2011 Arab Spring.
| A．what | B．that | C．where | D．whether |
I feel it a great honor ______ to give a speech here.
| A．to be asked | B．to have asked | C．being asked | D．to ask |
This is the first time that your parents have been abroad, ______?
| A．haven’t they | B．hasn’t it | C．aren’t they | D．isn’t it |