- Has John arrived yet? -- No, she _______ an hour ago.
Everyone has periods in their lives________ everything seems very hard.
—How about camping this weekend,just for a change?—OK,________you want.
In _________to being used in industry,laser can be applied to operations in the hospital.
Children under 18 will not be ____into the pub in this country.
No one knows when such a custom first _____.