I _________ an old photo while __________ my album, which reminded me of my happy childhood.
| A．came across, looking through | B．came about, looking up |
| C．came along, looking down upon | D．came up with, looking into |
As the Internet has gained popularity, there has been a change in the way ______ people spend their time.
| A．which | B．in which |
| C．where | D．when |
—Which city is the first ________ plastic shopping bags?
—As far as I know, it is San Francisco.
| A．banned | B．ban |
| C．banning | D．to ban |
By the time Dave reached the small boat, a thick white fog _______ over the surface of the water.
| A．spread | B．has spread |
| C．had spread | D．was spreading |
At the root of volunteering is the idea ________ one person may have the ability to offer services that can help other people.
| A．that | B．what | C．which | D．/ |
While many people are excited about these new technologies, these same technologies frighten others. Nowhere __________ truer than with genetically modified (GM) food.
| A．there is | B．is there |
| C．is this | D．this is |