单选题 Because the shop ___, all the T-shirts are sold at half price.

单选题 He is busy ___ a short story into French.

单选题 He could no longer ___ tears.

单选题 The difficulties of the task ___ our expectations.

单选题 Why ___ you always ___ things behind?

单选题 His mother had been ___ for him for years.

单选题 Your article is well written ___ a few spelling mistakes.

单选题 They are trying to ___ harmful substances from the soil.