This problem may lead to more serious ones if ____ unsolved.
| A．making | B．remained | C．keeping | D．left |
________ we know, the moon goes around the sun.
| A．As long as | B．As far as | C．As much as | D．As soon as |
Eventually, the soldiers made ___ breakthrough and ____ D-Day landings were successful.
| A．the; the | B．the; a | C．a; the | D．a ; a |
–Mum, I have been admitted into Hong Kong University.
--Well done! ____________.
| A．Take it easy | B．I’m not sure | C．I’m so proud of you | D．Wish you luck |
Since Claire had become attached to Tony, the robot needed _______________.
| A．to rebuild | B．to have rebuilt | C．being rebuilt | D．to be rebuilt |
It is the second time you _________ such a mistake.
| A．will make | B．have made | C．made | D．had made |