The sound of the birds __________happy memories of my childhood holidays.
| A．called up | B．called for | C．called on | D．called in |
If you take my ________, you'll make a lot of money in the trade.
| A．command | B．principle | C．attitude | D．tip |
“XiJinping's report, ” a smile on his face, he continued, “_____ to several hot topics, discusses how to increase peasants' income.”
| A．referring | B．refers | C．having referred | D．referred |
In ________ old society many young women died by so strange and cruel ________ custom.
| A．不填；a | B．不填；the | C．the；a | D．an；a |
______the Internet is of great help, I don’t think it’s a food idea to spend too much time on it.
| A．If | B．While | C．Because | D．As |
The growing speed of a plant is influenced by a number of factors, are beyond our control.
| A．most of them | B．most of which | C．most of what | D．most of that |