第 1 页 共 7 一、选择1
It is well known that Thomas Edison _____ the electric lamp
A) discovered B) found C) developed D) invented 2
I couldn't enter the lab because I had _____ the key in my office
A) taken B) left C) missed D) got 3
I regret _____ you that we are unable to offer you ermalovinent
A) informing B) having informed C) to inform D) to have been informed 4
The chairman has informed us that he _____ a few minutes late after the meeting begins
A) has arrived B) should arrive C) could arrive D) may arrived 5
She had made _____ many mistakes in the article that we couldn't catch what she meant
A) such B) that C) so D) as 6
I sincerely _____ him to make great progress with his new job in a short time
A)expect B) believe C) think D) instruct 7
Is _____ necessary to complete