.--- Only one of these books is worth _______. --- _______ is no wonder that you look so upset.
Jack coughed day and night, so the doctor______him to take the medicine three times a day.
He’s got himself into a dangerous situation______he is likely to lose control over the plane.
____ printed, this science fiction will be popular among the students.
The manager commanded that the work ____ finished by the end of this month.
Selecting a mobile phone for personal use is no easy task because technology ____ so rapidly.