﹣ My family will go on a trip to Beijing this summer.But we haven't decided _________.
﹣ Why not take the high﹣speed railway!（ ）
A．when to leave
B．how to get there
C．which hotel to choose
D．how long to stay there
The community worker is patient enough ________to the old how to use Health Code（码）.（ ）
A．explainB．explainsC．to explainD．explaining
—Miss Zhang seems quite familiar with Yunnan Province.
—Don't you know？She ________ a town school there as a volunteer teacher for over 2 years.（ ）
A．is inB．has gone to
C．has been inD．has been to
—Simon，we can save energy by riding shared bicycles.
—That's true.________，using air conditioners less is also a good way.（ ）
A．HoweverB．OtherwiseC．AnywayD．Moreover
—Honey，could you help me ________ the picture of colorful balloons from the paper？
—OK，Mum.I'm coming!（ ）
A．cut outB．carry outC．turn outD．work out
—Have you decided what to write about Gulliver in Lilliput in the report？
—I'm not sure.Maybe I need to read some ________ about it before writing.（ ）
A．reasonsB．rewardsC．resultsD．reviews