.— What rules do I have to keep while working here?
—________ , you must always wear your uniform.
A. By the way B. From then on
C. Believe it or not D. First of all
The robot needs ________ once a month. And we will check it for you for free.
A. to check B. be checked C. checking D. Check
The robot caught a virus. ____________, it didn’t work.
A. In order B. As a result
C. In order to D. However
I’m not sure ________ he is right or not.
A. if B. whether C. that D. Who
It would be far _________to have robots _____ our homework.
A. good, do B. best, do
C. better, do D. better, to do
The cruel cook was guilty ______murder. He was involved _____ the case.
A. with , with B. of , in
C. of , on D. in, of
