With more people ____ the traffic rules, our city is becoming better organized.
As soon as he comes back, I’ll tell him when ________and see him.
.-----My brother failed in business. -----_____.
The flight attendant welcomed us ___ the plane.
______, a man who expresses himself effectively is sure to succeed more rapidly than a man whose command of English is poor.
-----Shall we go to the art exhibition right away? -----_____.