—When did you uncle arrive China? — He got to Guangzhou _______ the morning of April 16th.A. at; in B. in; in C. in; on
I hardly have any spare time for my hobbies, ________?
All the students hope to _____ in their study, but it needs ____________.
The scientist ______ a new star last year.
Sandy asks me if the white blouse .
The relationship between China and the USA is always _________________.