It remains unknown ________ the peace talk between the two countries is going to lead.
The incomes of skilled workers went up. ____, unskilled workers saw their earnings fall.
–Mom, I will send you a gift for your birthday, ____ beyond your imagination.--Oh, dear, thanks.
____ the machine, the engineers paid much attention to the noise from it.
____ the 1990s, the number of antelopes had fallen to about 50,000.
If the machine makes a mistake -- ____ rarely happens -- it gives a warning in the form of a red light.