Scientists generally agree that Earth's climate will warm up over the next 50 to 100 years ________ it has warmed in the 20,000 years since Ice Age.
| A．so long as | B．as much as |
| C．as long as | D．as well as |
Keep yourself open we can experience the great joy that friendship can bring.
| A．as if | B．so that | C．even though | D．ever since |
Look at the timetable. Hurry up! Flight 9013 to Changsha off at 7:30.
| A．took | B．takes | C．will be taken | D．has taken |
Microblogs experienced rapid growth in 2013 in China, with its operators, users and visitorsseveral times.
| A．increase | B．increased | C．increasing | D．to increase |
— Tom! I forgot to bring my notebook this morning.
— Don’t worry! I it for you.
| A．will get | B．gets | C．am getting | D．am going to get |
He is of confidence, , in my opinion, is most important in society.
| A．how | B．that | C．what | D．which |