单选题 You’d better ___(　　)___ eating too much sugar.

单选题 She apologized for __(　　)____ late to the meeting.

单选题 One fourth of the __(　　)____ are workers.

单选题 What(　　)_(　　)____party it was.

单选题 This is the __(　　)____ river in the country.

单选题 Could you tell me the ___(　　)__ between American and British English in business writing.

单选题 The students are __(　　)____ about the upcoming field trip.

单选题 This medicine can __(　　)____ your(　　)quickly.