A driver should __ the road when .A concentrate on; drive B. concentrate in; driving C. concentrate to; drove D. concentrate on; driving
The writer was so ________ in his writing that he forgot to flick the ashes from his cigar.
The sign reads, “In case of _____ fire, break the glass and push _____ red button.”
We _______what our soldiers have done for our country.
They are fighting ________us _________the enemy
She’s having a lot of trouble with the new computer, but she doesn’t know whom to ________.