---How long have you been here?---Only about five minutes. Henry and Simon ______ here with me.A.walk B. have walkedC. walked D had walked
All the girls swam in the lake except two, who _____ halfway.
He regards that book _____ one of the worst that he’s _____ read.
We’re so busy that no one in the office can _____ for any other work.
The president _____ a cool reception when he visited London.
“Are you satisfied with his answer?” “Not at all. It couldn’t have been ____.”