He was always _______ for knowledge, and at last became an expert in the field of art.
| A．fond | B．content | C．brave | D．greedy |
The train moved slowly from the station，but________speed as it reached the open country.
| A．picked up | B．looked up | C．put up | D．made up |
A recent survey shows the number of people who shop in stores________，while far more are shopping online.
| A．decrease | B．decreases | C．is decreasing | D．are decreasing |
As________tourist attraction，the Summer Palace does have________strong attraction to visitors from home and abroad.
| A．the；/ | B．the；a | C．a；/ | D．a；the |
From space, the earth looks blue. This is about seventy-one percent of its surface is covered by water.
| A．why | B．how | C．because | D．whether |
Many grownups ________ challenging conversations with their children later this month to help them recover from the panic.
| A．have had | B．have | C．will be having | D．will have had |