单项选择题。1.He has_ ugly face but has _ kind heart.A. a, an B. an, a C. the, a 2. This kind of toy appeared _. It has been popular for over 20 years.A. in 1960s B. in the 1960 C. in the 1960s3. This cartoon was so interesting that everybody couldnt help _.A. laughing B. to laugh C. laughed4. All the lights are still on. The students _ still in the classroom.A. will be B. should be C. must be5. This cell phon
