Can I use the telephone on the table, sir? — Under no circumstances the telephone in the office for personal affairs.

My cousin doesn’t know what to ________ at the university;he can’t make up his mind about his future.

I am wondering ________ my invitation and join me for the trip to Hainan this summer.

The factory produces half a million pairs of shoes every year, 80% _______ are sold abroad.

________ occurred to me that the murder happened ________ a rainy day.[ ]