1. be careful with paint. it a certain amount of lead. а. contains б. is containing в. has contained г. contained 2.when mary came back, she looked very red from the sun. she in the sun too long. а. had been lying б. was lying в. had lain г. lay 3. there was nothing but to wait for the next train which was due at six. а. to do б. to be done в. to be doing г. to have been doing

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