The letters for the boss ______ on his desk but he didn’t read them until three days later.
A.was put | B.put | C.has put | D.were put |
From his ______ look, we could see that he hadn’t expected that we could raise such ______ questions to him.
A.confused; confusing | B.confusing; confused |
C.confusing; confusing | D.confused; confused |
The laboratory was well ______ for atomic research.
A.offered | B.equipped | C.provided | D.supplied |
You must ______ a wide vocabulary if you want to learn a language well.
A.set up | B.put on | C.settle down | D.build up |
Don’t bother Tom, he is ______ with the experiment on water molecules in the lab.
A.focused | B.fixed | C.occupied | D.concentrated |
Nowadays some parents regret not ______ more time with their kids when they were young.
A.to spend | B.spending | C.spend | D.being spent |