(届陕西省西工大附中高三第六次模拟英语试卷)—Mom, can I go out and play with my friends now?—No, honey, you can’t _____ you haven’t recovered from the knee injury.
— Where is my English book? — I brought it to you _____you were in hospital yesterday afternoon.
The nutrients in _____falls into the ocean quickly become available to other living creatures.
Don’t forget where the emergency exits are _____an emergency.
The lake is calm and clear, and one of the things that _____in the water is the famous tower.
The roommates have lived for three years and not once _____with each other.