(天津市河东区201 4年高三二模考试)2. lf you live in the country or have ever visited there, ____are that you have heard birds singing to welcome the new day.
【考点】考察固定句式
Two explosions near the finish line of the Boston Marathon killed at least 3 people and injured more than 180 others, and currently FBI has figured out how it __________.
A person ________ with H7N9 viruses will be more likely to die of lung dysfunction.
The children talked so loudly at dinner table that I had to struggle _________
At present, computer knowledge has become ___________ requirement as the ability to read and write.
Make sure the gas is turned off after a bath, which would ________ cause danger.