Thanks to the government，several new primary schools ________ in my hometown last year．（ ）
| A． |
build |
B． |
built |
C． |
are built |
D． |
were built |
Which of the following is a traffic sign？（ ）
A．
B．
C．
D．
_____ useful the information you've provided is!（ ）
A．What aB．WhatC．What anD．How
I'm going out． I'll be back _____ an hour．（ ）
A．atB．onC．inD．from
Father was so busy with his work that he had _____ time to read the newspaper．（ ）
A．someB．littleC．muchD．a bit of
_____ it rained a lot， we enjoyed our holiday．（ ）
A．AlthoughB．BecauseC．UnlessD．However