Complete the text with suitable prepositions. A good stock (a) — words is necessary (b) — anybody who wants to use a language. Vocabulary is an essential component (c) — successful communication. It is an integral part (d) — reading skill. While grammar is important, a lack (e) — vocabulary may result (f) — complete failure to convey a message. Vocabulary includes conceptual knowledge (g) — words that go well (h) — an ordinary dictionary meaning. Students’ vocabulary knowledge is a building process that occurs (i) — time as they tend to make connections (j) — other words.