It is reported that there are various reasons _____more and more people feel depressed at this time of year.
| A．why | B．when | C．what | D．how |
Now a lot of new technologies can ______ problems in industry.
| A．be applied to solve | B．be applied to solving |
| C．apply to solve | D．apply to solving |
When I returned home ,I found the window _____and something____.
| A．open, stolen | B．opening ,stealing |
| C．opened ,missed | D．opening, missing |
Come and see me whenever ____ .
| A． you are convenient | B．you will be convenient |
| C． it will be convenient for you | D．it is convenient to you |
The invention of steam engine greatly sped up the industrial revolution, which _____ a lot to the take-off of the world.
| A．led | B．contributed | C．constructed | D．exposed |
The quality of a processed food largely ______ the raw material and the way it _______.
| A．relies on; processes |
| B．depends on; processes |
| C．depends on; is processed |
| D．decides on; is processed |