Is this the reason ________ she explained in the report for her success in the job?[ ]

Please call mysecretary to arrange a meeting thisaftemoon, or ____ it is convenientto you.[ ]

. ______ we are sure about is the need to prevent children from being spoiled.

It is said that the __________ temple was built 1500 years ago.

The International Day against Drugs,aimed at warning people to keep away from drugs， _________ on June 26th every year