Although he had looked through all the reference material on the subject he still

Although he had looked through all the reference

Although he had looked through all the reference

______, he swore that he was not asleep.A．Although I had difficulty in waking himB．Since I

Although the pilot was badly hurt, he was able to explain what had happened.{A; B; C}A

______harder, he would have got through the exams.A．Had he workedB．He had workedC．Should h

He had a_____look in his eyes, which meant that he had come up with a good plan.A．trickyB．