问题
He tries _____English well. And he practices _____English every day.
A:on, at
B:at , on
C:by , on
D:on, on;
B:at , on
C:by , on
D:on, on;
正确答案是：
同类题型
Some students, hoping to get a high score, are _______ about the results of coming exam.
－___________ do you wash your hair－Three times a week.
The army went ________the thick forest and at last came to a little river.
The flowers _____ sweet in the botanic garden attract the visitors to the beauty of nature.[ ]
The doctor tried to laugh my brother _____ his fears about the coming operation.