She is to , so she often wears a hat when cleaning the house.

It will be some years before some foreign doctors change the impression they have ____Chinese medicine, _____, in their opinion, is nothing but raw herbs and not effective at all in treating diseases[ ]

t was his turn to deliverhis speech, , he walkedtowards the microphone

Why are you so late? —I got stuck in the traffic jam, or I ___earlier.

It is very kind _____ you to help me with mywork because it is very difficult _____me to do it by myself.