When first____ to the market, these products enjoyed great success.
| A．introducing | B．introduced | C．introduce | D．being introduced |
To make a string picture, first draw the outline on a card, then spread the glue _____ you want to attach the string,
| A．to which | B．on which | C．where | D．that |
One advantage of eating a balanced breakfast is ______ it can keep you energetic throughout the day.
| A．when | B．how | C．that | D．whether |
I think that's unlikely to happen, but if that ______ occur, both America's and China's interest would be severely damaged.
| A．should | B．could | C．would | D．might |
My wife ______the night shift when my plane ______. That’s why no one is to meet me at the airport today.
| A．will be working; arrives | B．was working; arrived |
| C．will have worked; has arrived | D．is working; is arriving |
As I know, there is _____ car in this neighborhood.
| A．no such | B．no a | C．not such | D．no such a |