When his wife returned from abroad, Kevin ____ his paintings at the art museum in his hometown.
| A．was exhibiting | B．exhibited |
| C．would exhibit | D．had been exhibiting |
Recently some hospitals in China have adopted ______ they call a robot-doctor, ______ will be used
to operate on patients with more accuracy.
| A．what; that | B．that; which | C．what; which | D．which; what |
. ______ understanding the challenges faced by the world’s poorest people can we expect a new future
free of extreme poverty and hunger.
| A．On | B．Through | C．Only | D．Only by |
. This system allows businessmen to keep ______of their list of goods by showing which items are
being sold and how fast they are moving.
| A．sight | B．track | C．touch | D．sign |
______ somewhat weak infrastructure, Hong Kong’s overall economic performance and business
efficiency make it Asia's leading financial capital for a long time.
| A．Although | B．While | C．Despite of | D．In spite of |
Few pleasures can equal ______ of achieving your goal after hard work.
| A．the one | B．it | C．that | D．one |