—I wonder ______ you’ll water this kind of flower.
—Every other day.
| A．how often | B．how long | C．how soon | D．how much |
"We can not afford limited progress. We need rapid progress," Ban said at the Third World Climate Conference in Geneva, by the World Meteorological Organization (WMO).
| A．organized | B．being organized | C．organizing | D．was organized |
-- Alison, I’m sorry. I can’t come to the wedding with you tomorrow morning. -- ________?
-- My grandma was severely ill, so I have to stay in the hospital to look after her.
| A．How is it | B．How come | C．So what | D．What’s the problem |
Double ovens are a good idea, especially ________ you are cooking several meals at a time.
| A．though | B．if | C．that | D．unless |
I know a little bit about the city as I __________ there for one year in my youth.
| A．am studying | B．had studied | C．studied | D．have studied |
Leaves are found _______ all kinds of trees, but they differ greatly ________ size and shape.
| A．in; on | B．in; from | C．on; by | D．on; in |