I’m not sure ___ I can learn at present; but I’m sure it will be something ___ I might use in the future.
She’ll never forget her stay there ________ she found her son who had gone missing two years before.
My uncle’s house in the downtown area is much smaller than ours , but it is twice _______ expensive .
—You speak very good French! —Thanks. I __________ French in Sichuan University for four years.
The teacher together with the students ________ discussing Reading Skills that ________ newly published in America.
Not until I came home last night ________ to bed.