1.
He will be there in . . . . . . . . hour.

2.
If only I . . . . . . . . richer.

3.
Only . . . . . . . . toys have been sold since morning.

4.
. . . . . . . . a doctor . . . . . . . . in time, the patient can be saved.

5.
Please . . . . . . . . your wet hankey and take this towel.