I am pleased to have this chance today ______to you about the United Nations or the UN.
| A．talking | B．to talk | C．talked | D．talk |
Women ,to air pollution before giving birth to a baby, are more likely to give birth to children with heart defects, researchers reported on December 29.
| A．exposed | B．exposing |
| C．are exposed | D．are exposing |
—Why she buy that expensive coat when these cheaper ones are just as good.
—It doesn’t make sense, does it?
| A．must | B．shall | C．can | D．may |
Not only with your phone, but you can use it to send e-mails, chat on instant messenger, listen to music and even watch television.
| A．you can take pictures | B．can take pictures you |
| C．can take you pictures | D．can you take pictures |
Welcome to the Ice Bucket Challenge. The challenge is simple: when , one either pours a bucket of icy water over his or her head or donates $100 to the ALS Association.
| A．to challenge | B．challenged |
| C．you challenged | D．having challenged |
Over the last three decades, the number of people participating in physical fitness programs sharply.
| A．was increasing | B．will be increasing |
| C．had increased | D．has increased |