The hall is too noisy. The speaker has to raise his voice to make himself _____. A.hear B.heard C. hearing
The young woman always ______ sunglasses in the sun.
– What does your brother ______? – He is of medium build.
There ______ a dolphin show in the zoo tomorrow evening.
There is _____pollution and ____fishes in the river now than 20 years ago.
The sign(标志牌)made us safe.