“Boys and girls, please help ________ to some fish.” said Miss Chen.

The foreigners find _____difficult to learn Chinese well.

Wei Hua told me that Wu Dong was＿＿＿＿＿＿＿ill

On our journey to Australia last summer, our luggage was ________ at the customs. We were not allowed to carry food such as meat and vegetables.

ought he couldn’t go to the party because he had to write a report, but he went ___________.