Li Lei can’t go hiking with us today,because he       take care of his sick mother.

----Will Barbara come to our party? ----I am not sure, because he ____ go to the concert with his friend.

 I ____ have been there, but I ____ not find the time.

A traffic regulation released in a foreign country states that passengers sharing a car with a drunken driver _____ be punished together with the driver himself.

——Don’t put the bike_______the teaching building.——Sorry, I won’t.