Many Chinese children have to take piano lessons, but few of them have ____ in it.
—When _______ this stone bridge______ ?—In 1935.
Spanish ________ as the official language in Cuba.
So far, most of the work _______ by others, it’s your turn to do the rest of it.
The students how to do the experiment in class yesterday.
—When shall we go to watch the basketball match in the sports centre? —Not until the work________ tomorrow.