Though trying really hard, they acknowledged ____ at last.
If you cheat in the exam, you could hardly ________ it.
It was for this reason ________ her aunt moved out of Shenzhen and settled down in a small village.
As we all know, an island is a piece of land ________ by water.
The professor gave me quite a few novels, ________ is here for you to read this evening.
— How many students are league members in your school? — League members ________ one fifth of the number of the students in our school.