—May I use your phone? I left mine at home.—________. Here it is.
Much to ________ surprise of the students, the concert which was held once a year turned out to be ________ complete failure.
Scientists say it may be five or six years _______ it is possible to test this medicine on human patients.
He has the habit of ________ useful information while reading.
He left Wenzhou for Beijing last year, and we ________ him ever since.
When the boss got to the factory ________ midnight, he found it ________ ruins.