—When _______ this stone bridge______ ?—In 1935.
An ________ boy, Li Wen, works hard and gets good grades in his final exam.
eighteen-year-olds
eighteen-year-old
eighteen years old
For your own ________, please do not smoke inside the plane.
seat
safety
score
He ________ much healthier if he ________ enough exercise in his free time.
is; take
will be; takes
will be; take
“Li Ming, ________ your homework first, and you can watch TV for 30 minutes.” said his mum.
does
did
do
Look! There ________ some information about traffic rules in this book.
is
are
was