The reason ______ his coming to China is ______ he wants to study in China.
Natural learning environments inspire a burning ________ to learn, the key to a productive lifestyle.
—Jack's car hit a big tree yesterday.— ________? In my memory, he is always a careful driver.
Europeans always hold their fork in the left hand, ________Americans switch it between their left and right hands.
A US coal producer agreed to pay ________ total of $ 209 million for the mining accident that killed 29 people,________ worst such disaster in 40 years in the US.
Martin was highly________ by Tom's ________ jokes.