《合同法》规定，当事人约定的（）低于违约所造成的损失的，受损失一方当事人可以请求人民法

We ______ very close，but things have changed recently. A. used to be B. are used to being C. are used to be D. were used to being

He found it difficult to make himself ______. A. understood B. be understood C. understand D. to understand

It rained hard yesterday， ______ prevented me from going to the park. A. that B. which C. as D. it

He was busily engaged ______ writing letters. A. on B. inC. with D. by

Do remember to ______ the light when you leave the room. A. turn up B. turn on C. turn off D. turn down

The atmosphere consists of an ocean of gases ______ miles high. A. hundreds B. hundreds of C. of hundreds D. of hundreds of

Not only the students but also the old teacher ______ been changed. A. was B. were C. has D. have

—— ________ I had！ —— You really suffered a lot. A. What a time B. What time C. How a time D. how time

The advertisements are trying ________ people to buy things they don‘t really need. A. persuade B. persuading C. be persuading D. to persuade

Practice ________ English every day. A. speak B. to speak C. speaks D. speaking