—Jack can’t concentrate on his lessons recently. —Yes, that might______his low score in the last test.
Watch out! The car you .
By the time he was 14, Mozart many pieces of music for violin, piano and for orchestra.
The computer center,____last year , is very popular among the students in this school.
Hearing the __________news that he failed the exam, a ___________look appeared on his face.
With more people _____the traffic rules, our city is becoming better organized.