— has Jack been studying English?—Since he was seven years old.A、How long B、How often C、When
—1 wore sports shoes to the party by mistake yesterday evening. —Oh, dear, you must be very ______ at the party!
—1 am stressed out about the coming exam, Mom. —Be confident and you will do ______ you set in your mind.
—It will snow hard tomorrow and I will give you a ride to school. —What a great ______ !
Some people are afraid that ______ air pollution may cause changes in weather around the world.
---- Hi , do you know if Tom ________ to my party next week ? ----- I think he will come if he ________ free.