There was a _____ look on his face. He found what the expert said too difficult to understand.

There was a _____ look on his face. He found what the expert said too difficult to understand.

#95567

puzzle

puzzling

puzzled

to puzzle

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The music sounded，    the end of the class．

#96970

indicating

indicated

to indicate

indicate

Some English scientists are identifying problems ____ technology in the 21st century. If solved, the solutions could change the world.

#97172

facing

faced

being faced

having faced

I was told that there were about 50 foreign students ________ Chinese in the school, most ________ were from Germany.

#95465

study; of whom

study; of them

studying; of them

studying; of whom

The experts advised ____________ our army ____________ modern weapons.

#95737

equipping; for

to equip; with

equipping; with

to equip; for

____ from a Chinese character meaning people, the mascot “Haibao” shows the character of Chinese culture.

#95224

Created

Creating

To create

To be created

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