When it ______ research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals.
一Hello!Friendship Hotel. Can I help you? ----Do you have a room with a double bedfor Saturday?
一I turn on the TV for you,Grandpa? 一Yes,thanks a lot,my dear. You’re so considerate.
I really appreciateto drive me home,but I am afraid that I have to finish my work first now.
When we got there after the accident,we were told that the injuredto the nearest hospital.
with the medicine shipped from China,the patient got fully recovered two days later.