... (in/for/before/within) ten days The secretary must forward this document to director (until/by/at/within) 10 p.m This store is open (until/by/at/within) 11p.m You can get a full refund (within/by/on/for) ... www.word-reader.com Dùng That: - Trong mệnh đề quan hệ xác định (the, this, these, those, his, her… - Luôn dùng “ that” sau: all, everything, something, anything, little, much, none so sánh KHÔNG DÙNG THAT: sau ... as + S2 Ex: This printer is as effective as that one That bedroom is twice as heavy as the one Trạng từ S1 + V + as + adv + as + S2 Ex: Fill out this form as quickly as possible Danh từ S1 +...