You should keep it in mind: Don’t ____ important things too quickly; instead, you should think twice before you go.A. decide on B. depend on C concentrate on D. focus on
You got back so late and you didn’t even give me a proper reason _______ you hadn’t called me! I’m very unhappy with you.
There was a big dog ______ in front of Mr. Hill’s house, so David didn’t dare to go near it.
The tourists can not help wondering ______ the ancient people could manage to complete the magnificent building without modern equipment.
We have no choice. _______ we go or we stay, the result is the same.
As a teacher you have to ______ your methods to suit the needs of slower children.