Mrs. Smith finds it hard to clear up the mess, as her children are alwayswhenever she tries to.
English is a language that many people around the world _______ not speak perfectly but at least _______ understand.
Something is wrong with the window; it _______ not open.
—Is there a basketball match between the LA Lakers and Houston Rockets this Saturday? —There _______ be.I’ve already got one ticket.
Test takers _______ remain in their seats until all the exam papers have been collected.
After hours of repair,the driver tried to start the car but it _______ work.