We'd better take umbrellas—I'm sure it____when we arrive in London; it's always wet there at this time of year．
| A．will rain | B．is raining | C．will be raining | D．would rain |
My brother’s bedroom is always a mess, and he can never find anything, _________ is very frustrating.
| A．where | B．whom | C．when | D．which |
I don’t understand why they don’t have the report. It _________ to them a week ago.
| A．is sent | B．was sent | C．will be sent | D．had been sent |
-Was the United State of America founded on July 4th, 1776？
--You _________ be right but I need to check it in the history textbook anyway.
| A．have to | B．must | C．may | D．will |
James was enjoying the art show, _________ his wife wanted to go home.
| A．or | B．for | C．so | D．but |
--Is your uncle a pilot?
--Yes. He _________ four days a week and has been to many places.
| A．travels | B．travelled | C．has travelled | D．had travelled |